GB2312360B - Voice signal coding apparatus - Google Patents

Voice signal coding apparatus

Info

Publication number
GB2312360B
GB2312360B GB9707087A GB9707087A GB2312360B GB 2312360 B GB2312360 B GB 2312360B GB 9707087 A GB9707087 A GB 9707087A GB 9707087 A GB9707087 A GB 9707087A GB 2312360 B GB2312360 B GB 2312360B
Authority
GB
United Kingdom
Prior art keywords
voice signal
coding apparatus
signal coding
voice
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9707087A
Other versions
GB9707087D0 (en
GB2312360A (en
Inventor
Hidetaka Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP8091178A external-priority patent/JPH09281997A/en
Priority claimed from JP09117796A external-priority patent/JP3607774B2/en
Priority claimed from JP09276896A external-priority patent/JP3607775B2/en
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to GB0023246A priority Critical patent/GB2350763B/en
Priority to GB0023247A priority patent/GB2351211B/en
Publication of GB9707087D0 publication Critical patent/GB9707087D0/en
Publication of GB2312360A publication Critical patent/GB2312360A/en
Application granted granted Critical
Publication of GB2312360B publication Critical patent/GB2312360B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/004—Predictors, e.g. intraframe, interframe coding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB9707087A 1996-04-12 1997-04-08 Voice signal coding apparatus Expired - Fee Related GB2312360B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0023246A GB2350763B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus
GB0023247A GB2351211B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8091178A JPH09281997A (en) 1996-04-12 1996-04-12 Voice coding device
JP09117796A JP3607774B2 (en) 1996-04-12 1996-04-12 Speech encoding device
JP09276896A JP3607775B2 (en) 1996-04-15 1996-04-15 Voice state discrimination device

Publications (3)

Publication Number Publication Date
GB9707087D0 GB9707087D0 (en) 1997-05-28
GB2312360A GB2312360A (en) 1997-10-22
GB2312360B true GB2312360B (en) 2001-01-24

Family

ID=27306668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9707087A Expired - Fee Related GB2312360B (en) 1996-04-12 1997-04-08 Voice signal coding apparatus

Country Status (3)

Country Link
US (1) US6272459B1 (en)
DE (1) DE19715126C2 (en)
GB (1) GB2312360B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10247098A (en) * 1997-03-04 1998-09-14 Mitsubishi Electric Corp Method for variable rate speech encoding and method for variable rate speech decoding
KR100302370B1 (en) * 1997-04-30 2001-09-29 닛폰 호소 교카이 Speech interval detection method and system, and speech speed converting method and system using the speech interval detection method and system
CN100583242C (en) 1997-12-24 2010-01-20 三菱电机株式会社 Method and apparatus for speech decoding
JP3319396B2 (en) * 1998-07-13 2002-08-26 日本電気株式会社 Speech encoder and speech encoder / decoder
JP2000308167A (en) * 1999-04-20 2000-11-02 Mitsubishi Electric Corp Voice encoding device
US6954727B1 (en) * 1999-05-28 2005-10-11 Koninklijke Philips Electronics N.V. Reducing artifact generation in a vocoder
JP3451998B2 (en) * 1999-05-31 2003-09-29 日本電気株式会社 Speech encoding / decoding device including non-speech encoding, decoding method, and recording medium recording program
GB2352949A (en) * 1999-08-02 2001-02-07 Motorola Ltd Speech coder for communications unit
JP2001142499A (en) * 1999-11-10 2001-05-25 Nec Corp Speech encoding device and speech decoding device
JP3558031B2 (en) 2000-11-06 2004-08-25 日本電気株式会社 Speech decoding device
DE10124420C1 (en) * 2001-05-18 2002-11-28 Siemens Ag Coding method for transmission of speech signals uses analysis-through-synthesis method with adaption of amplification factor for excitation signal generator
JP3561261B2 (en) * 2002-05-30 2004-09-02 株式会社東芝 Data communication device and communication control method
GB0326263D0 (en) * 2003-11-11 2003-12-17 Nokia Corp Speech codecs
US7752039B2 (en) * 2004-11-03 2010-07-06 Nokia Corporation Method and device for low bit rate speech coding
JP4380669B2 (en) * 2006-08-07 2009-12-09 カシオ計算機株式会社 Speech coding apparatus, speech decoding apparatus, speech coding method, speech decoding method, and program
PT2945158T (en) * 2007-03-05 2020-02-18 Ericsson Telefon Ab L M Method and arrangement for smoothing of stationary background noise
US8121835B2 (en) * 2007-03-21 2012-02-21 Texas Instruments Incorporated Automatic level control of speech signals
JP5152110B2 (en) * 2009-06-19 2013-02-27 富士通株式会社 Packet analysis method, program, and apparatus
KR20140067512A (en) * 2012-11-26 2014-06-05 삼성전자주식회사 Signal processing apparatus and signal processing method thereof
US11521643B2 (en) * 2020-05-08 2022-12-06 Bose Corporation Wearable audio device with user own-voice recording
CN113782050A (en) * 2021-09-08 2021-12-10 浙江大华技术股份有限公司 Sound tone changing method, electronic device and storage medium
CN114679512A (en) * 2022-03-25 2022-06-28 深圳禾苗通信科技有限公司 Old man smart phone call real-time speed reduction method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890328A (en) * 1985-08-28 1989-12-26 American Telephone And Telegraph Company Voice synthesis utilizing multi-level filter excitation
EP0374941A2 (en) * 1988-12-23 1990-06-27 Nec Corporation Communication system capable of improving a speech quality by effectively calculating excitation multipulses
US5138661A (en) * 1990-11-13 1992-08-11 General Electric Company Linear predictive codeword excited speech synthesizer

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
IL84902A (en) * 1987-12-21 1991-12-15 D S P Group Israel Ltd Digital autocorrelation system for detecting speech in noisy audio signal
IL84948A0 (en) * 1987-12-25 1988-06-30 D S P Group Israel Ltd Noise reduction system
US5307441A (en) * 1989-11-29 1994-04-26 Comsat Corporation Wear-toll quality 4.8 kbps speech codec
EP0459363B1 (en) * 1990-05-28 1997-08-06 Matsushita Electric Industrial Co., Ltd. Voice signal coding system
KR950013551B1 (en) * 1990-05-28 1995-11-08 마쯔시다덴기산교 가부시기가이샤 Noise signal predictting dvice
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
JP2518765B2 (en) * 1991-05-31 1996-07-31 国際電気株式会社 Speech coding communication system and device thereof
ATE477571T1 (en) * 1991-06-11 2010-08-15 Qualcomm Inc VOCODER WITH VARIABLE BITRATE
US5734789A (en) * 1992-06-01 1998-03-31 Hughes Electronics Voiced, unvoiced or noise modes in a CELP vocoder
DE4315313C2 (en) * 1993-05-07 2001-11-08 Bosch Gmbh Robert Vector coding method especially for speech signals
DE4315315A1 (en) * 1993-05-07 1994-11-10 Ant Nachrichtentech Method for vector quantization, especially of speech signals
EP0654909A4 (en) * 1993-06-10 1997-09-10 Oki Electric Ind Co Ltd Code excitation linear prediction encoder and decoder.
JP2616549B2 (en) * 1993-12-10 1997-06-04 日本電気株式会社 Voice decoding device
CA2136891A1 (en) * 1993-12-20 1995-06-21 Kalyan Ganesan Removal of swirl artifacts from celp based speech coders
US5602961A (en) * 1994-05-31 1997-02-11 Alaris, Inc. Method and apparatus for speech compression using multi-mode code excited linear predictive coding
JP3568255B2 (en) * 1994-10-28 2004-09-22 富士通株式会社 Audio coding apparatus and method
JPH08272395A (en) * 1995-03-31 1996-10-18 Nec Corp Voice encoding device
US5732389A (en) * 1995-06-07 1998-03-24 Lucent Technologies Inc. Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures
US5890115A (en) * 1997-03-07 1999-03-30 Advanced Micro Devices, Inc. Speech synthesizer utilizing wavetable synthesis

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890328A (en) * 1985-08-28 1989-12-26 American Telephone And Telegraph Company Voice synthesis utilizing multi-level filter excitation
EP0374941A2 (en) * 1988-12-23 1990-06-27 Nec Corporation Communication system capable of improving a speech quality by effectively calculating excitation multipulses
US5138661A (en) * 1990-11-13 1992-08-11 General Electric Company Linear predictive codeword excited speech synthesizer

Also Published As

Publication number Publication date
GB9707087D0 (en) 1997-05-28
DE19715126A1 (en) 1997-11-06
GB2312360A (en) 1997-10-22
US6272459B1 (en) 2001-08-07
DE19715126C2 (en) 2001-02-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150408